#include "Type/Binary.h"
#include <string.h>

namespace gql
{
  static const char base64_chars[] =
        "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
        "abcdefghijklmnopqrstuvwxyz"
        "0123456789+/";

    std::string base64_encode(const std::vector<uint8_t> &bin)
    {
        std::string ret;
        int i = 0;
        int j = 0;
        uint8_t char_array_3[3];
        uint8_t char_array_4[4];

        size_t offset = 0;
        size_t bufLen = bin.size();
        while (bufLen--)
        {
            char_array_3[i++] = bin[offset++];
            if (i == 3)
            {
                char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
                char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
                char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
                char_array_4[3] = char_array_3[2] & 0x3f;

                for (i = 0; (i < 4); i++)
                    ret += base64_chars[char_array_4[i]];
                i = 0;
            }
        }

        if (i)
        {
            for (j = i; j < 3; j++)
                char_array_3[j] = '\0';

            char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
            char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
            char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
            char_array_4[3] = char_array_3[2] & 0x3f;

            for (j = 0; (j < i + 1); j++)
                ret += base64_chars[char_array_4[j]];

            while ((i++ < 3))
                ret += '=';
        }

        return ret;
    }

    std::vector<uint8_t> base64_decode(const char *base64)
    {
        int in_len = strlen(base64);
        int i = 0;
        int j = 0;
        int in_ = 0;
        uint8_t char_array_4[4], char_array_3[3];
        std::vector<uint8_t> ret;

        while (in_len-- && (base64[in_] != '='))
        {
            char_array_4[i++] = base64[in_];
            in_++;
            if (i == 4)
            {
                for (i = 0; i < 4; i++)
                    char_array_4[i] = strchr(base64_chars, char_array_4[i]) - base64_chars;

                char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
                char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
                char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

                for (i = 0; (i < 3); i++)
                    ret.push_back(char_array_3[i]);
                i = 0;
            }
        }

        if (i)
        {
            for (j = i; j < 4; j++)
                char_array_4[j] = 0;

            for (j = 0; j < 4; j++)
                char_array_4[j] = strchr(base64_chars,char_array_4[j]) - base64_chars;

            char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
            char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
            char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];

            for (j = 0; (j < i - 1); j++)
                ret.push_back(char_array_3[j]);
        }

        return ret;
    }

    GBinary::GBinary(const char* base64)
    {
      _bin = base64_decode(base64);
    }

    bool GBinary::operator<=(const GBinary& other) const
    {
      return _bin <= other._bin;
    }

    bool GBinary::operator>=(const GBinary& other) const
    {
      return _bin >= other._bin;
    }

    bool GBinary::operator>(const GBinary& other) const
    {
      return _bin > other._bin;
    }

    bool GBinary::operator<(const GBinary& other) const
    {
      return _bin < other._bin;
    }

    bool GBinary::operator!=(const GBinary& other) const
    {
      return _bin != other._bin;
    }

    bool GBinary::operator==(const GBinary& other) const
    {
      return _bin == other._bin;
    }

} // namespace gql
